I uploaded it to the site below yesterday. This is a standalone executable, about 240K. It seems to run OK here without needing installation on my Windows 7. It's the version off the included CD for the RT-N16.

I've used this probably a hundred + times. It has never failed yet, not even once. NB - I always set a fixed IP on the PC, otherwise the PC loses it's address and can't talk to the router.